She wore them for the first time Friday and was told they weren't in line with uniform policy and if she wasn't in school in the right trousers on Monday then she would either be sent home to change or taught in isolation.

Black - yep.Not skinny, flared, jeans, leggings, jean-type or combat type - as far as I can see, none of those

I bet you they think they are too tight. Straight leg trousers sometimes look like skinny leg ones. I personally see nothing wrong with the trousers, but I suspect that's where the school are coming from.

They're fairly straight, but not skinny in the slightest. DD's school shoes are the same style of brogues as the model in the picture and the bottoms of the trousers cover half of the laces.

I suspect they want all girls in bootcut-type trousers, which is fine, but they should say so in the uniform policy.

We bought those trousers because they weren't skinny, flared, jeans, leggings, etc. As far as could see, they fit with my daughter's taste, and their policy. If they want a specific style, they should say so, not turn it into a vague guessing game

I think it's probably the look at the ankle that the school object to. They are BU though because the trousers look perfectly acceptable to me, the are meant for school and they don't breach any part of the policy. I'd send her in some that are wider at the ankle but letter to head with printout of trousers from web page. They are from BHS, it's not Top Shop or a teen fashion store. School should include a specific pair of trousers from a specific store as an example of what's ok if they are going to be this ridiculous.

But they can't be after boot cut trousers because the policy says no flared! I think the trousers look perfect for school. Maybe it's the buttons ?<grasps at straws>. I think you need to ask them specifically what is wrong with them.

I think they are very smart. I would write a letter to the head with a print out from the website and a print out of the policy and say "on a purely objective basis these trousers are neither X nor Y nor Z and therefore appear to comply with your policy. If you are going to arbitrarily object to trousers that meet the policy but you, or individual members of staff just don't subjectively like the look of, may I suggest that you consider specifying a particular cut and brand of trouser as part of the uniform policy. Until you do so, my daughter will be wearing these trousers to school."